![]() ![]() (Definition composed by Line Le Gall, Olivier De Clerck, Sofie Vranken and Marine Robuchon, based on diverse literature sources, in the framework of compiling macroalgae traits.) Asexual reproduction may amongst others occur by binary fission, budding, asexual spore formation or vegetative propagation (adapted from Henderson's Dictionary of Biology Lawrence, 2005).Īsexual reproduction is detected, but the underpinning mechanism is unknown. The taxon reproduces asexually, which is reproduction which does not involve fusion of gametes or meiosis and usually results in progeny with an identical genetic constitution to the parent and to each other. ![]() In asexual division in eukaryotic organisms, all cell divisions are by mitosis. Reproduction may occur by binary fission, budding, asexual spore formation or vegetative propagation. Reproduction which does not involve formation and fusion of gametes and results in progeny with an identical genetic constitution to the parent and to each other. Second-order opportunistic species, able to resist some periods of low oxygen levels, and some concentration of pollutants (present in slight to pronounced unbalanced situations).įirst-order opportunistic species, able to resist very low oxygen levels, episodes of anoxia and high concentration of pollutants, early and successful pioneers (present in pronounced unbalanced situations). in naturally disturbed or enriched conditions, such as estuaries), but their populations are stimulated by some disturbances, such as organic enrichment (present in slight unbalanced situations). These species may occur under normal conditions (e.g. Species indifferent to disturbance, always present in low densities with non-significant variations with time (they are present in mature systems and slight unbalanced). Species very sensitive to disturbance and present under undisturbed conditions (they are present in mature systems). ![]() AZTI’s Marine Biotic Index ecological group ![]()
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